Protekt O2 Wheelchair Cushion 18 x16 x4 with Pump Cushions Air Slide tube powder coated silver vein Furnishing Accessories Slide tube powder coated silver vein steel frame Flat mobile base only * Seat wedge and base are secured to each other with velcro * Individual may be moved without repositioning * An excellent choice for the prevention and treatment of pressure sores * The soft interconnected air cells allow for deep immersion providing constant low pressure across the entire seating surface * Adjustable air cells offer deep immersion to provide excellent pressure redistributino for tissue protection and treatment * Dual valve compartments address seating challenges such as pelvic obliquities sacral seating and enhances posture control * Both compartments can be adjusted indepedently to increase positioning and stability for side to side control * Nilon breathable cover with non skid bottom and safety straps * Easy to use hand held inflation pump * Flame resistant latex free neoprene * Patch kit included * Weight capacity: 500 lbs * Warranty: 5 year prorated *